headscale/platform_config.go
Juan Font Alonso c810b24eb9 Lint fixes 5/n
2022-06-26 12:21:35 +02:00

460 lines
12 KiB
Go

package headscale
import (
"bytes"
"html/template"
"net/http"
textTemplate "text/template"
"github.com/gofrs/uuid"
"github.com/gorilla/mux"
"github.com/rs/zerolog/log"
)
// WindowsConfigMessage shows a simple message in the browser for how to configure the Windows Tailscale client.
func (h *Headscale) WindowsConfigMessage(
writer http.ResponseWriter,
req *http.Request,
) {
winTemplate := template.Must(template.New("windows").Parse(`
<html>
<body>
<h1>headscale</h1>
<h2>Windows registry configuration</h2>
<p>
This page provides Windows registry information for the official Windows Tailscale client.
<p>
<p>
The registry file will configure Tailscale to use <code>{{.URL}}</code> as its control server.
<p>
<h3>Caution</h3>
<p>You should always download and inspect the registry file before installing it:</p>
<pre><code>curl {{.URL}}/windows/tailscale.reg</code></pre>
<h2>Installation</h2>
<p>Headscale can be set to the default server by running the registry file:</p>
<p>
<a href="/windows/tailscale.reg" download="tailscale.reg">Windows registry file</a>
</p>
<ol>
<li>Download the registry file, then run it</li>
<li>Follow the prompts</li>
<li>Install and run the official windows Tailscale client</li>
<li>When the installation has finished, start Tailscale, and log in by clicking the icon in the system tray</li>
</ol>
<p>Or</p>
<p>Open command prompt with Administrator rights. Issue the following commands to add the required registry entries:</p>
<pre>
<code>REG ADD "HKLM\Software\Tailscale IPN" /v UnattendedMode /t REG_SZ /d always
REG ADD "HKLM\Software\Tailscale IPN" /v LoginURL /t REG_SZ /d "{{.URL}}"</code></pre>
<p>
Restart Tailscale and log in.
<p>
</body>
</html>
`))
config := map[string]interface{}{
"URL": h.cfg.ServerURL,
}
var payload bytes.Buffer
if err := winTemplate.Execute(&payload, config); err != nil {
log.Error().
Str("handler", "WindowsRegConfig").
Err(err).
Msg("Could not render Windows index template")
writer.Header().Set("Content-Type", "text/plain; charset=utf-8")
writer.WriteHeader(http.StatusInternalServerError)
_, err := writer.Write([]byte("Could not render Windows index template"))
if err != nil {
log.Error().
Caller().
Err(err).
Msg("Failed to write response")
}
return
}
writer.Header().Set("Content-Type", "text/html; charset=utf-8")
writer.WriteHeader(http.StatusOK)
_, err := writer.Write(payload.Bytes())
if err != nil {
log.Error().
Caller().
Err(err).
Msg("Failed to write response")
}
}
// WindowsRegConfig generates and serves a .reg file configured with the Headscale server address.
func (h *Headscale) WindowsRegConfig(
writer http.ResponseWriter,
req *http.Request,
) {
config := WindowsRegistryConfig{
URL: h.cfg.ServerURL,
}
var content bytes.Buffer
if err := windowsRegTemplate.Execute(&content, config); err != nil {
log.Error().
Str("handler", "WindowsRegConfig").
Err(err).
Msg("Could not render Apple macOS template")
writer.Header().Set("Content-Type", "text/plain; charset=utf-8")
writer.WriteHeader(http.StatusInternalServerError)
_, err := writer.Write([]byte("Could not render Windows registry template"))
if err != nil {
log.Error().
Caller().
Err(err).
Msg("Failed to write response")
}
return
}
writer.Header().Set("Content-Type", "text/x-ms-regedit; charset=utf-8")
writer.WriteHeader(http.StatusOK)
_, err := writer.Write(content.Bytes())
if err != nil {
log.Error().
Caller().
Err(err).
Msg("Failed to write response")
}
}
// AppleConfigMessage shows a simple message in the browser to point the user to the iOS/MacOS profile and instructions for how to install it.
func (h *Headscale) AppleConfigMessage(
writer http.ResponseWriter,
req *http.Request,
) {
appleTemplate := template.Must(template.New("apple").Parse(`
<html>
<body>
<h1>headscale</h1>
<h2>Apple configuration profiles</h2>
<p>
This page provides <a href="https://support.apple.com/guide/mdm/mdm-overview-mdmbf9e668/web">configuration profiles</a> for the official Tailscale clients for <a href="https://apps.apple.com/us/app/tailscale/id1470499037?ls=1">iOS</a> and <a href="https://apps.apple.com/ca/app/tailscale/id1475387142?mt=12">macOS</a>.
</p>
<p>
The profiles will configure Tailscale.app to use <code>{{.URL}}</code> as its control server.
</p>
<h3>Caution</h3>
<p>You should always download and inspect the profile before installing it:</p>
<!--
<pre><code>curl {{.URL}}/apple/ios</code></pre>
-->
<pre><code>curl {{.URL}}/apple/macos</code></pre>
<h2>Profiles</h2>
<!--
<h3>iOS</h3>
<p>
<a href="/apple/ios" download="headscale_ios.mobileconfig">iOS profile</a>
</p>
-->
<h3>macOS</h3>
<p>Headscale can be set to the default server by installing a Headscale configuration profile:</p>
<p>
<a href="/apple/macos" download="headscale_macos.mobileconfig">macOS profile</a>
</p>
<ol>
<li>Download the profile, then open it. When it has been opened, there should be a notification that a profile can be installed</li>
<li>Open System Preferences and go to "Profiles"</li>
<li>Find and install the Headscale profile</li>
<li>Restart Tailscale.app and log in</li>
</ol>
<p>Or</p>
<p>Use your terminal to configure the default setting for Tailscale by issuing:</p>
<code>defaults write io.tailscale.ipn.macos ControlURL {{.URL}}</code>
<p>Restart Tailscale.app and log in.</p>
</body>
</html>`))
config := map[string]interface{}{
"URL": h.cfg.ServerURL,
}
var payload bytes.Buffer
if err := appleTemplate.Execute(&payload, config); err != nil {
log.Error().
Str("handler", "AppleMobileConfig").
Err(err).
Msg("Could not render Apple index template")
writer.Header().Set("Content-Type", "text/plain; charset=utf-8")
writer.WriteHeader(http.StatusInternalServerError)
_, err := writer.Write([]byte("Could not render Apple index template"))
if err != nil {
log.Error().
Caller().
Err(err).
Msg("Failed to write response")
}
return
}
writer.Header().Set("Content-Type", "text/html; charset=utf-8")
writer.WriteHeader(http.StatusOK)
_, err := writer.Write(payload.Bytes())
if err != nil {
log.Error().
Caller().
Err(err).
Msg("Failed to write response")
}
}
func (h *Headscale) ApplePlatformConfig(
writer http.ResponseWriter,
req *http.Request,
) {
vars := mux.Vars(req)
platform, ok := vars["platform"]
if !ok {
log.Error().
Str("handler", "ApplePlatformConfig").
Msg("No platform specified")
http.Error(writer, "No platform specified", http.StatusBadRequest)
return
}
id, err := uuid.NewV4()
if err != nil {
log.Error().
Str("handler", "ApplePlatformConfig").
Err(err).
Msg("Failed not create UUID")
writer.Header().Set("Content-Type", "text/plain; charset=utf-8")
writer.WriteHeader(http.StatusInternalServerError)
_, err := writer.Write([]byte("Failed to create UUID"))
if err != nil {
log.Error().
Caller().
Err(err).
Msg("Failed to write response")
}
return
}
contentID, err := uuid.NewV4()
if err != nil {
log.Error().
Str("handler", "ApplePlatformConfig").
Err(err).
Msg("Failed not create UUID")
writer.Header().Set("Content-Type", "text/plain; charset=utf-8")
writer.WriteHeader(http.StatusInternalServerError)
_, err := writer.Write([]byte("Failed to create content UUID"))
if err != nil {
log.Error().
Caller().
Err(err).
Msg("Failed to write response")
}
return
}
platformConfig := AppleMobilePlatformConfig{
UUID: contentID,
URL: h.cfg.ServerURL,
}
var payload bytes.Buffer
switch platform {
case "macos":
if err := macosTemplate.Execute(&payload, platformConfig); err != nil {
log.Error().
Str("handler", "ApplePlatformConfig").
Err(err).
Msg("Could not render Apple macOS template")
writer.Header().Set("Content-Type", "text/plain; charset=utf-8")
writer.WriteHeader(http.StatusInternalServerError)
_, err := writer.Write([]byte("Could not render Apple macOS template"))
if err != nil {
log.Error().
Caller().
Err(err).
Msg("Failed to write response")
}
return
}
case "ios":
if err := iosTemplate.Execute(&payload, platformConfig); err != nil {
log.Error().
Str("handler", "ApplePlatformConfig").
Err(err).
Msg("Could not render Apple iOS template")
writer.Header().Set("Content-Type", "text/plain; charset=utf-8")
writer.WriteHeader(http.StatusInternalServerError)
_, err := writer.Write([]byte("Could not render Apple iOS template"))
if err != nil {
log.Error().
Caller().
Err(err).
Msg("Failed to write response")
}
return
}
default:
writer.Header().Set("Content-Type", "text/plain; charset=utf-8")
writer.WriteHeader(http.StatusBadRequest)
_, err := writer.Write([]byte("Invalid platform, only ios and macos is supported"))
if err != nil {
log.Error().
Caller().
Err(err).
Msg("Failed to write response")
}
return
}
config := AppleMobileConfig{
UUID: id,
URL: h.cfg.ServerURL,
Payload: payload.String(),
}
var content bytes.Buffer
if err := commonTemplate.Execute(&content, config); err != nil {
log.Error().
Str("handler", "ApplePlatformConfig").
Err(err).
Msg("Could not render Apple platform template")
writer.Header().Set("Content-Type", "text/plain; charset=utf-8")
writer.WriteHeader(http.StatusInternalServerError)
_, err := writer.Write([]byte("Could not render Apple platform template"))
if err != nil {
log.Error().
Caller().
Err(err).
Msg("Failed to write response")
}
return
}
writer.Header().Set("Content-Type", "application/x-apple-aspen-config; charset=utf-8")
writer.WriteHeader(http.StatusOK)
_, err = writer.Write(content.Bytes())
if err != nil {
log.Error().
Caller().
Err(err).
Msg("Failed to write response")
}
}
type WindowsRegistryConfig struct {
URL string
}
type AppleMobileConfig struct {
UUID uuid.UUID
URL string
Payload string
}
type AppleMobilePlatformConfig struct {
UUID uuid.UUID
URL string
}
var windowsRegTemplate = textTemplate.Must(
textTemplate.New("windowsconfig").Parse(`Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Tailscale IPN]
"UnattendedMode"="always"
"LoginURL"="{{.URL}}"
`))
var commonTemplate = textTemplate.Must(
textTemplate.New("mobileconfig").Parse(`<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>PayloadUUID</key>
<string>{{.UUID}}</string>
<key>PayloadDisplayName</key>
<string>Headscale</string>
<key>PayloadDescription</key>
<string>Configure Tailscale login server to: {{.URL}}</string>
<key>PayloadIdentifier</key>
<string>com.github.juanfont.headscale</string>
<key>PayloadRemovalDisallowed</key>
<false/>
<key>PayloadType</key>
<string>Configuration</string>
<key>PayloadVersion</key>
<integer>1</integer>
<key>PayloadContent</key>
<array>
{{.Payload}}
</array>
</dict>
</plist>`),
)
var iosTemplate = textTemplate.Must(textTemplate.New("iosTemplate").Parse(`
<dict>
<key>PayloadType</key>
<string>io.tailscale.ipn.ios</string>
<key>PayloadUUID</key>
<string>{{.UUID}}</string>
<key>PayloadIdentifier</key>
<string>com.github.juanfont.headscale</string>
<key>PayloadVersion</key>
<integer>1</integer>
<key>PayloadEnabled</key>
<true/>
<key>ControlURL</key>
<string>{{.URL}}</string>
</dict>
`))
var macosTemplate = template.Must(template.New("macosTemplate").Parse(`
<dict>
<key>PayloadType</key>
<string>io.tailscale.ipn.macos</string>
<key>PayloadUUID</key>
<string>{{.UUID}}</string>
<key>PayloadIdentifier</key>
<string>com.github.juanfont.headscale</string>
<key>PayloadVersion</key>
<integer>1</integer>
<key>PayloadEnabled</key>
<true/>
<key>ControlURL</key>
<string>{{.URL}}</string>
</dict>
`))